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The Subaru WRX has earned a reputation for being a performance-oriented vehicle that excels in various driving conditions. For enthusiasts looking to enhance their WRX, a Stage 2 build offers a balance of power, handling, and reliability. This article will explore the key components and considerations for building a reliable Subaru WRX Stage 2 build.
Understanding the Stage 2 Build
A Stage 2 build typically includes upgrades that enhance the vehicle’s performance without compromising reliability. This stage builds on the foundation laid by a Stage 1 build, which usually involves basic modifications such as an upgraded air intake and a tune. Stage 2 takes it a step further, focusing on enhancing power and handling.
Key Components of a Stage 2 Build
- Upgraded turbocharger
- High-flow exhaust system
- ECU tuning
- Upgraded intercooler
- Performance intake
Each of these components plays a crucial role in achieving the desired performance while maintaining the reliability that Subaru vehicles are known for.
Upgraded Turbocharger
The turbocharger is the heart of the WRX’s performance. Upgrading to a larger, more efficient turbocharger can significantly increase horsepower and torque. When selecting a turbo, consider the following:
- Compatibility with existing components
- Boost levels and tuning requirements
- Reliability ratings from other users
Popular choices include the Garrett GTX series and the BorgWarner EFR series, both known for their performance and reliability.
High-Flow Exhaust System
A high-flow exhaust system is essential for reducing back pressure and improving exhaust flow. This upgrade not only enhances performance but also provides a more aggressive sound. When selecting an exhaust system, consider:
- Material quality (stainless steel is preferred)
- Design (cat-back vs. turbo-back)
- Sound levels and drone
Brands like Cobb and Invidia offer reliable options that are popular among WRX enthusiasts.
ECU Tuning
ECU tuning is a critical step in a Stage 2 build. It optimizes the engine’s performance parameters to match the new hardware. A proper tune ensures that the vehicle runs efficiently and reliably. Options for tuning include:
- Reflash with a tuning software like Cobb Accessport
- Custom tuning from a reputable tuner
- Considerations for future upgrades
Always choose a tuner with experience in Subaru vehicles to maximize performance and reliability.
Upgraded Intercooler
An upgraded intercooler is vital for maintaining optimal intake temperatures, especially when running higher boost levels. A more efficient intercooler can prevent heat soak and ensure consistent performance. Key factors to consider include:
- Core size and design
- Compatibility with existing piping
- Mounting options
Brands like Mishimoto and ETS provide high-quality intercoolers that are well-regarded in the Subaru community.
Performance Intake
A performance intake system can enhance airflow to the engine, improving throttle response and overall performance. When selecting an intake, consider the following:
- Filter type (dry vs. oiled)
- Design (short ram vs. cold air)
- Fitment and installation ease
Popular options include the Cobb SF Intake and the AEM Cold Air Intake, both of which provide excellent performance gains.
Handling Upgrades
Power is only part of the equation; handling is equally important for a reliable Stage 2 build. Upgrading suspension components can improve the vehicle’s stability and cornering capabilities. Key upgrades include:
- Performance coilovers
- Upgraded sway bars
- Strut tower braces
- Performance tires
These upgrades help maintain control during spirited driving while ensuring comfort on daily commutes.
Maintaining Reliability
While building a Stage 2 WRX can significantly enhance performance, it is crucial to maintain reliability. Here are some tips for ensuring longevity:
- Regular maintenance checks
- Using high-quality fluids and filters
- Monitoring boost levels and engine temperatures
- Investing in a quality tune
By following these guidelines, you can enjoy the benefits of your Stage 2 build without sacrificing the durability and dependability of your Subaru WRX.
Conclusion
A reliable Subaru WRX Stage 2 build requires careful selection of components and attention to detail. By focusing on upgrades that enhance power and handling while maintaining reliability, you can create a vehicle that is both fun to drive and dependable. Remember to prioritize quality parts and professional tuning to achieve the best results.